Re: [PATCH 2/2] qemu: snapshot: Improve detection of mixed snapshots

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On 05/29/2014 03:08 AM, Peter Krempa wrote:
> Currently we don't support mixed (external + internal) snapshots. The
> code detecting the snapshot type didn't make sure that the memory image
> was consistent with the snapshot type leading into strange error
> message:
> 
>  $ virsh snapshot-create-as --domain VM --diskspec vda,snapshot=internal --memspec snapshot=external,file=/tmp/blah
>  error: internal error: unexpected code path
> 
> Fix the mixed detection code to detect this kind of mistake:
> 
>  $ virsh snapshot-create-as --domain VM --diskspec vda,snapshot=internal --memspec snapshot=external,file=/tmp/blah
>  error: unsupported configuration: mixing internal and external targets for a snapshot is not yet supported

It may still be nice to support some day down the road, but a better
error message in the meantime is worth having.

> ---
>  src/qemu/qemu_driver.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)

ACK; safe for 1.2.5.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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